DOC-4201 added exact match query examples (#337)

* DOC-4201 added exact match query examples

* DOC-4201 dotnet format changes

* DOC-4201 removed unused 'using' statements

* DOC-4201 fixed email tag example

---------

Co-authored-by: atakavci <[email protected]>

Author: andy-stark-redis

tests/Doc/QueryEmExample.cs

@@ -0,0 +1,284 @@
+// EXAMPLE: query_em
+// HIDE_START
+
+using NRedisStack.RedisStackCommands;
+using NRedisStack.Search;
+using NRedisStack.Search.Literals.Enums;
+using NRedisStack.Tests;
+using StackExchange.Redis;
+
+// HIDE_END
+
+// REMOVE_START
+namespace Doc;
+[Collection("DocsTests")]
+// REMOVE_END
+
+// HIDE_START
+public class QueryEmExample
+{
+
+    [SkipIfRedis(Is.OSSCluster)]
+    public void run()
+    {
+        var muxer = ConnectionMultiplexer.Connect("localhost:6379");
+        var db = muxer.GetDatabase();
+        //REMOVE_START
+        // Clear any keys here before using them in tests.
+        try { db.FT().DropIndex("idx:bicycle"); } catch { }
+        try { db.FT().DropIndex("idx:email"); } catch { }
+        //REMOVE_END
+
+        FTCreateParams idxParams = new FTCreateParams()
+            .AddPrefix("bicycle:")
+            .On(IndexDataType.JSON);
+
+        Schema bikeSchema = new Schema()
+            .AddTextField(new FieldName("$.description", "description"))
+            .AddNumericField(new FieldName("$.price", "price"))
+            .AddTagField(new FieldName("$.condition", "condition"));
+
+        db.FT().Create("idx:bicycle", idxParams, bikeSchema);
+
+
+        var bicycles = new object[]
+            {
+                new
+                {
+                    brand = "Velorim",
+                    model = "Jigger",
+                    price = 270,
+                    description = "Small and powerful, the Jigger is the best ride " +
+                                    "for the smallest of tikes! This is the tiniest " +
+                                    "kids’ pedal bike on the market available without" +
+                                    " a coaster brake, the Jigger is the vehicle of " +
+                                    "choice for the rare tenacious little rider " +
+                                    "raring to go.",
+                    condition = "used"
+                },
+                new
+                {
+                    brand = "Bicyk",
+                    model = "Hillcraft",
+                    price = 1200,
+                    description = "Kids want to ride with as little weight as possible." +
+                        " Especially on an incline! They may be at the age " +
+                        "when a 27.5 inch wheel bike is just too clumsy coming " +
+                        "off a 24 inch bike. The Hillcraft 26 is just the solution" +
+                        " they need!",
+                    condition = "used",
+                },
+                new
+                {
+                    brand = "Nord",
+                    model = "Chook air 5",
+                    price = 815,
+                    description = "The Chook Air 5  gives kids aged six years and older " +
+                        "a durable and uberlight mountain bike for their first" +
+                        " experience on tracks and easy cruising through forests" +
+                        " and fields. The lower  top tube makes it easy to mount" +
+                        " and dismount in any situation, giving your kids greater" +
+                        " safety on the trails.",
+                    condition = "used",
+                },
+                new
+                {
+                    brand = "Eva",
+                    model = "Eva 291",
+                    price = 3400,
+                    description = "The sister company to Nord, Eva launched in 2005 as the" +
+                        " first and only women-dedicated bicycle brand. Designed" +
+                        " by women for women, allEva bikes are optimized for the" +
+                        " feminine physique using analytics from a body metrics" +
+                        " database. If you like 29ers, try the Eva 291. It’s a " +
+                        "brand new bike for 2022.. This full-suspension, " +
+                        "cross-country ride has been designed for velocity. The" +
+                        " 291 has 100mm of front and rear travel, a superlight " +
+                        "aluminum frame and fast-rolling 29-inch wheels. Yippee!",
+                    condition = "used",
+                },
+                new
+                {
+                    brand = "Noka Bikes",
+                    model = "Kahuna",
+                    price = 3200,
+                    description = "Whether you want to try your hand at XC racing or are " +
+                        "looking for a lively trail bike that's just as inspiring" +
+                        " on the climbs as it is over rougher ground, the Wilder" +
+                        " is one heck of a bike built specifically for short women." +
+                        " Both the frames and components have been tweaked to " +
+                        "include a women’s saddle, different bars and unique " +
+                        "colourway.",
+                    condition = "used",
+                },
+                new
+                {
+                    brand = "Breakout",
+                    model = "XBN 2.1 Alloy",
+                    price = 810,
+                    description = "The XBN 2.1 Alloy is our entry-level road bike – but that’s" +
+                        " not to say that it’s a basic machine. With an internal " +
+                        "weld aluminium frame, a full carbon fork, and the slick-shifting" +
+                        " Claris gears from Shimano’s, this is a bike which doesn’t" +
+                        " break the bank and delivers craved performance.",
+                    condition = "new",
+                },
+                new
+                {
+                    brand = "ScramBikes",
+                    model = "WattBike",
+                    price = 2300,
+                    description = "The WattBike is the best e-bike for people who still feel young" +
+                        " at heart. It has a Bafang 1000W mid-drive system and a 48V" +
+                        " 17.5AH Samsung Lithium-Ion battery, allowing you to ride for" +
+                        " more than 60 miles on one charge. It’s great for tackling hilly" +
+                        " terrain or if you just fancy a more leisurely ride. With three" +
+                        " working modes, you can choose between E-bike, assisted bicycle," +
+                        " and normal bike modes.",
+                    condition = "new",
+                },
+                new
+                {
+                    brand = "Peaknetic",
+                    model = "Secto",
+                    price = 430,
+                    description = "If you struggle with stiff fingers or a kinked neck or back after" +
+                        " a few minutes on the road, this lightweight, aluminum bike" +
+                        " alleviates those issues and allows you to enjoy the ride. From" +
+                        " the ergonomic grips to the lumbar-supporting seat position, the" +
+                        " Roll Low-Entry offers incredible comfort. The rear-inclined seat" +
+                        " tube facilitates stability by allowing you to put a foot on the" +
+                        " ground to balance at a stop, and the low step-over frame makes it" +
+                        " accessible for all ability and mobility levels. The saddle is" +
+                        " very soft, with a wide back to support your hip joints and a" +
+                        " cutout in the center to redistribute that pressure. Rim brakes" +
+                        " deliver satisfactory braking control, and the wide tires provide" +
+                        " a smooth, stable ride on paved roads and gravel. Rack and fender" +
+                        " mounts facilitate setting up the Roll Low-Entry as your preferred" +
+                        " commuter, and the BMX-like handlebar offers space for mounting a" +
+                        " flashlight, bell, or phone holder.",
+                    condition = "new",
+                },
+                new
+                {
+                    brand = "nHill",
+                    model = "Summit",
+                    price = 1200,
+                    description = "This budget mountain bike from nHill performs well both on bike" +
+                        " paths and on the trail. The fork with 100mm of travel absorbs" +
+                        " rough terrain. Fat Kenda Booster tires give you grip in corners" +
+                        " and on wet trails. The Shimano Tourney drivetrain offered enough" +
+                        " gears for finding a comfortable pace to ride uphill, and the" +
+                        " Tektro hydraulic disc brakes break smoothly. Whether you want an" +
+                        " affordable bike that you can take to work, but also take trail in" +
+                        " mountains on the weekends or you’re just after a stable," +
+                        " comfortable ride for the bike path, the Summit gives a good value" +
+                        " for money.",
+                    condition = "new",
+                },
+                new
+                {
+                    model = "ThrillCycle",
+                    brand = "BikeShind",
+                    price = 815,
+                    description = "An artsy,  retro-inspired bicycle that’s as functional as it is" +
+                        " pretty: The ThrillCycle steel frame offers a smooth ride. A" +
+                        " 9-speed drivetrain has enough gears for coasting in the city, but" +
+                        " we wouldn’t suggest taking it to the mountains. Fenders protect" +
+                        " you from mud, and a rear basket lets you transport groceries," +
+                        " flowers and books. The ThrillCycle comes with a limited lifetime" +
+                        " warranty, so this little guy will last you long past graduation.",
+                    condition = "refurbished",
+                },
+            };
+
+        for (var i = 0; i < bicycles.Length; i++)
+        {
+            db.JSON().Set($"bicycle:{i}", "$", bicycles[i]);
+        }
+        // HIDE_END
+
+
+        // STEP_START em1
+        SearchResult res1 = db.FT().Search(
+            "idx:bicycle",
+            new Query("@price:[270 270]")
+        );
+        Console.WriteLine(res1.TotalResults); //    >>> 1
+
+        SearchResult res2 = db.FT().Search(
+            "idx:bicycle",
+            new Query().AddFilter(
+                new Query.NumericFilter("price", 270, 270)
+            )
+        );
+        Console.WriteLine(res2.TotalResults); //    >>> 1
+        // STEP_END
+
+        // Tests for 'em1' step.
+        // REMOVE_START
+        Assert.Equal(1, res1.TotalResults);
+        Assert.Equal(1, res2.TotalResults);
+        // REMOVE_END
+
+
+        // STEP_START em2
+        SearchResult res3 = db.FT().Search(
+            "idx:bicycle",
+            new Query("@condition:{new}")
+        );
+        Console.WriteLine(res3.TotalResults);   // >>> 4
+        // STEP_END
+
+        // Tests for 'em2' step.
+        // REMOVE_START
+        Assert.Equal(4, res3.TotalResults);
+        // REMOVE_END
+
+
+        // STEP_START em3
+        Schema emailSchema = new Schema()
+            .AddTagField(new FieldName("$.email", "email"));
+
+        FTCreateParams emailParams = new FTCreateParams()
+            .AddPrefix("key:")
+            .On(IndexDataType.JSON);
+
+        db.FT().Create("idx:email", emailParams, emailSchema);
+
+        db.JSON().Set("key:1", "$", "{\"email\": \"[email protected]\"}");
+
+
+        SearchResult res4 = db.FT().Search(
+            "idx:email",
+            new Query("@email:{test\\@redis\\.com}").Dialect(2)
+        );
+        Console.WriteLine(res4.TotalResults);   // >>> 1
+        // STEP_END
+
+        // Tests for 'em3' step.
+        // REMOVE_START
+        db.FT().DropIndex("idx:email");
+        Assert.Equal(1, res4.TotalResults);
+        // REMOVE_END
+
+
+        // STEP_START em4
+        SearchResult res5 = db.FT().Search(
+            "idx:bicycle",
+            new Query("@description:\"rough terrain\"")
+        );
+        Console.WriteLine(res5.TotalResults);   // >>> 1
+        // STEP_END
+
+        // Tests for 'em4' step.
+        // REMOVE_START
+        Assert.Equal(1, res5.TotalResults);
+        // REMOVE_END
+
+
+        // HIDE_START
+    }
+}
+// HIDE_END
+